Siemens HNF364S - 200A, 600V, 3-Pole, Heavy-Duty, Safety Switch

Meet the Siemens HNF364S — a rugged 200A, 600V, 3-pole safety switch engineered for dependable on/off isolation and precise overcurrent protection in demanding industrial and commercial environments. This heavy-duty fusible switch is designed to keep critical systems like motors and feeders safeguarded while delivering straightforward maintenance and reliable performance.

Why the HNF364S stands out

• Robust 3-pole design delivers coordinated switching and protection across three lines, ensuring comprehensive circuit control in demanding setups.
• 200A, 600V rating supports substantial loads common in manufacturing, processing, and heavy equipment applications, while maintaining safe, repeatable operation.
• Heavy-duty construction built to withstand rough environments, vibration, and frequent cycling—minimizing downtime and extending service life.
• Compact, maintainable fusible switch provides essential isolation with integrated overcurrent protection in a single enclosure, saving space in crowded panel arrangements.
• Ideal for motor disconnects, panelboards, and branch circuits offering a streamlined solution for protecting and isolating critical circuits without adding complexity.

Core benefits and real-world impact

The HNF364S is more than just a switch. It’s a dedicated reliability partner for facilities that demand quick, secure disconnection and dependable fuse-protected protection. By consolidating switching and overcurrent protection, it simplifies enclosure design, reduces the number of components, and speeds up maintenance—so technicians can perform fuse changes and inspections with confidence in harsh or active environments.

Practical use cases

• Motor disconnects in conveyors, pumps, fans, and processing equipment where rapid, safe isolation is essential.
• Panelboard protection for feeders supplying multiple downstream circuits in industrial facilities.
• Branch circuit protection in commercial settings such as large HVAC substations or distributed electrical infrastructure.

What you gain with Siemens quality

Choosing the HNF364S means selecting a time-tested safety solution backed by Siemens' engineering rigor. Its fusible switching approach provides a clear, immediate path to circuit protection in the event of overloads, helping minimize risk to personnel and equipment. The 3-pole configuration ensures uniform disconnection across all phases, reducing the chance of neutral or ground-related issues during isolation.

Specifications at a glance

• Model: HNF364S
• Amperage: 200A
• Voltage: 600V
• Poles: 3-Pole
• Duty: Heavy-Duty
• Type: Fusible safety switch for on/off isolation and overcurrent protection

Installation and maintenance mindset

In environments where reliability matters, the HNF364S shines by delivering straightforward maintenance with durable components designed for long service life. Plan routine inspections around fuse status, enclosure integrity, and operability of the switch mechanism to keep equipment protected and ready for action when the plant demands it.

In short, the Siemens HNF364S pairs industrial-grade durability with practical, space-efficient protection. It’s the go-to choice when you need a compact, maintainable, three‑pole fusible switch that seamlessly handles motor disconnects, panelboard protection, and branch circuits in harsh environments — all without compromising safety or performance.